Hikvision DS-PS1-E-WE -20–60 °C

<a href="https://www.hikvision.com/en/products/Alarm-Products/Hikvision-Intrusion-Alarm-Panel/Expanders-Peripheral/ds-ps1-e-we/" style="display: block;">https://www.hikvision.com/en/products/Alarm-Products/Hikvision-Intrusion-Alarm-Panel/Expanders-Peripheral/ds-ps1-e-we/</a><br><br><br><br><ul><li>868 MHz two-way wireless communication</li><li>IP65 protective level</li><li>3 years battery life span (triggered every two weeks and alerting 90 s for each triggering)</li><li>AES-128 encryption</li><li>Front and rear panel tamper-proof</li><li>3 kinds of alarm sounds: fire alarm, panic alarm, and intrusion alarm</li><li>Buzzer Decibel: 110 dB</li><li>Fully remote configurable through App</li><li>Multiple enrollment methods and easy installation design</li><li>Frequency hopping against jamming for reliable transmission</li></ul>